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Finding the Fourth Proportional to 3,940.48, 5,910.70 and 1,167.17

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Solution

The fourth proportional to 3,940.48, 5,910.70 and 1,167.17 is: 1,750.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.48 : 5,910.70 = 1,167.17 : x
  2. Step 2: Convert to fraction form
    3,940.48/5,910.70 = 1,167.17/x
  3. Step 3: Cross multiply
    3,940.48x = 5,910.70 × 1,167.17
  4. Step 4: Simplify right side
    3,940.48x = 6,898,791.72
  5. Step 5: Solve for x
    x = 6,898,791.72/3,940.48
  6. Step 6: Final answer
    x = 1,750.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.